The symbol of the ancient symbol is supposed to mean luck, or bring luck. Wikipedia.com helps to deepen that meaning.
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It's a really neat cave racer. Nice touch on the fact that it makes out the Hammer and Sickle . Though, I think the hammer part could have been done a bit better. I don't think Soviets carried MP-40's. Especially in the 1950's , should have gone with an AK, if you had it.
Though, this would be disqualified in the terms of Cave Racers. The tip needs to be a wrench.